Special Parallel Groove Clamps

Product Overview

Our JBL, JBT, JB‑TL series special‑shaped parallel groove clamps belong to mainstream overhead line power fittings, engineered for non‑load‑bearing conductor splicing and branch connection on overhead power transmission lines. When paired with matching insulating covers, the clamps deliver reliable insulation shielding, lowering short‑circuit and leakage risks for outdoor wiring projects. We stock aluminum, copper and copper‑aluminum bimetal material variants to fit dissimilar metal wire splicing, effectively mitigating galvanic corrosion between copper and aluminum cables. These connectors see broad deployment in distribution grid renovation, rural overhead wiring, street light circuit branching and temporary power distribution jobs.

Core Product Advantages

Premium Corrosion‑Resistant Raw Material

We adopt high anti‑oxidation aluminum alloy as the baseline material. Copper‑aluminum transition models eliminate electrochemical corrosion at copper‑aluminum wiring junctions, extending outdoor service lifespan significantly.

Anti‑Drop Integrated Component Structure

One‑piece connected hardware prevents bolt and washer detachment during field installation, cutting rework risk for on‑site electricians.

Strong Anti‑Creep Arc Clamping Design

Large curved contact surfaces distribute clamping force evenly to suppress conductor creep deformation, stopping terminal loosening caused by long‑term wire stress and temperature swings.

Low‑Resistance Tooth‑Shaped Contact Layout

Precision machined tooth profiles shrink contact resistance to guarantee stable electrical conductivity, reducing abnormal heat buildup at wiring joints under sustained operating load.

Certified Performance Metrics

Power frequency withstand voltage: ≥18kV, zero dielectric breakdown during 1‑minute pressure testing

Insulation resistance: above

1.0×10

2

Ω

Weather aging endurance: maintains dependable mechanical & conductive performance after 1008 hours of artificial accelerated climate aging testing, adapting to harsh outdoor conditions including ultraviolet exposure, rain erosion and temperature fluctuation

Application Scenarios

Overhead low‑voltage distribution line tap‑off & cable jointing

Power grid upgrade and rural electrification construction

Street lamp, outdoor monitoring and landscape lighting branch wiring

Temporary power supply for construction sites and outdoor events

Copper‑to‑aluminum transition connection for heterogeneous conductor setups

Custom Service Note

Custom special‑shaped products are supported. Reach out to our team for inquiries regarding additional specification options and model selections.